151 lines
5.1 KiB
Markdown
151 lines
5.1 KiB
Markdown
# Page Break Control Implementation Summary
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## Changes Implemented
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### 1. Core Configuration Files Modified
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#### `/HSRTReport/Config/Typography.tex`
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- Added enhanced page break control penalties
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- Implemented listing and itemize environment protection
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- Added needspace package for conditional page breaks
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- Configured float placement control
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- Set up protected itemize/enumerate environments
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- Defined `listenabsatz` environment for compact lists
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#### `/HSRTReport/Config/PageBreakControl.tex` (New File)
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- Created comprehensive page break control module
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- Implemented section-level space requirements (12/10/8 baseline skips)
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- Added protected environments for lists and listings
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- Created smart section commands
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- Implemented conditional page break commands
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- Added figure/table protection
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#### `/HSRTReport/HSRTReport.cls`
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- Added inclusion of PageBreakControl.tex module
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#### `/HSRTReport/Modules/Content/Listings.tex`
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- Updated listings configuration to prevent page breaks
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- Added float=H option to keep listings in place
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- Modified blstlisting environment for better page break control
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### 2. Key Features Implemented
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#### Section and Paragraph Control
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- **Minimum content after sections**: Sections require ~2 paragraphs (12 baseline skips) or move to next page
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- **Smart section breaking**: Sections check available space before placement
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- **Paragraph cohesion**: Enhanced penalties to keep paragraphs together
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#### Listing Protection
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- Listings automatically stay on the same page when they fit
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- `float=H` option prevents floating
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- Protected listing environment available for guaranteed no-break
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#### List Environment Protection
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- Itemize and enumerate lists stay with preceding paragraphs
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- Automatic penalties added to standard environments
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- Protected versions available: `nobreakitemize` and `nobreakenumerate`
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### 3. Technical Implementation Details
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#### Penalties Applied
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- `\widowpenalty=10000` - Prevents orphaned lines
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- `\clubpenalty=10000` - Prevents widowed lines
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- `\interlinepenalty=150-5000` - Variable penalty for list items
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- `\floatingpenalty=20000` - Strongly discourages float breaks
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- `\predisplaypenalty=10000` - Prevents breaks before equations
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- `\postdisplaypenalty=10000` - Prevents breaks after equations
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#### Package Dependencies
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- `needspace` - For conditional page breaks based on available space
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- `afterpage` - For deferred page break commands
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- `placeins` - For float barriers at section boundaries
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- `enumitem` - For customized list environments (already included)
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- `etoolbox` - For environment hooks (already included)
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### 4. Usage Examples
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#### Automatic Protection (Works Without Changes)
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```latex
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\section{Title}
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This content automatically requires sufficient space or moves to next page.
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\begin{itemize}
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\item Lists are automatically protected
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\item From breaking with their introduction
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\end{itemize}
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\begin{lstlisting}
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Code listings stay together automatically
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\end{lstlisting}
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```
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#### Manual Control When Needed
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```latex
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% Force content to stay together
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\begin{critical}
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Important content that must not split
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\end{critical}
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% Protected list
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\begin{nobreakitemize}
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\item Guaranteed to stay together
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\item No page breaks within
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\end{nobreakitemize}
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% Smart section with space check
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\smartsection{Intelligent Section}
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% Conditional page break
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\conditionalpagebreak[15\baselineskip]
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```
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### 5. Configuration Values
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| Element | Minimum Space Required | Description |
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|---------|----------------------|-------------|
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| Section | 12 baseline skips | ~2 paragraphs |
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| Subsection | 10 baseline skips | ~1.5 paragraphs |
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| Subsubsection | 8 baseline skips | ~1 paragraph |
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| Listing | 5 baseline skips | ~5 lines minimum |
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| Float pages | 80% full | Minimum fill for float-only pages |
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| Text on float pages | 10% minimum | Ensures some text with floats |
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### 6. Benefits
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1. **Improved Readability**: Sections don't start with minimal content at page bottom
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2. **Better Structure**: Related content stays together (lists with introductions, code samples)
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3. **Professional Appearance**: Eliminates awkward page breaks
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4. **Flexibility**: Automatic behavior with manual override options
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5. **Compatibility**: Works with existing HSRT Report template structure
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### 7. Testing Results
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- Document compiles successfully with `make compile`
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- PDF output generated without errors
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- Page break penalties active and functioning
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- No conflicts with existing template features
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### 8. Files Created/Modified
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**New Files:**
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- `/HSRTReport/Config/PageBreakControl.tex`
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- `/PageBreakControl_Usage.md`
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- `/PageBreak_Implementation_Summary.md`
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**Modified Files:**
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- `/HSRTReport/Config/Typography.tex`
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- `/HSRTReport/HSRTReport.cls`
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- `/HSRTReport/Modules/Content/Listings.tex`
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### 9. Maintenance Notes
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- All changes are modular and contained within configuration files
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- Can be disabled by removing PageBreakControl.tex inclusion
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- Individual features can be adjusted through penalty values
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- Compatible with future template updates
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### 10. Known Limitations
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- Very long sections may still need manual intervention
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- Float placement may occasionally override page break preferences
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- Performance impact minimal but present for very large documents |