13.2. Conversion Variables
Purpose
These variables control the conversion process.
Interface
| Name | Type | Purpose | 
| Init-only: | ||
| OPT_CONFIG | string | the configuration library | 
| OPT_LOOK | string | the look library | 
| OPT_STYLE | string | the type of a document | 
| OPT_TARGET | string | target format | 
| OPT_NUMBER | integer | line numbering frequency (when pretty-printing programming languages) | 
| Processing: | ||
| DEFAULT_TABLE_STYLE | string | default style for tables (initially columns) | 
| DEFAULT_TAB_SIZE | integer | default tab size (initially 8) | 
Description
The init-only variables can only be set via sdf's -D option or via the init macro on the top line of a file.
The processing variables control the processing of SDF text before it is passed to a format driver for conversion.
DEFAULT_TAB_SIZE is used when tabs are converted to spaces within SDF files.
