COMPRESS = compression-level
The COMPRESS option specifies the level of compression to be used when building the help file. Compression levels indicate either no compression, medium compression (approximately 40%), or high compression (approximately 50%).
compression-level
Specifies the level of compression. This parameter can be one of the following values:
| Value | Meaning |
| 0 | No compression |
| 1 | High compression |
| FALSE | No compression |
| HIGH | High compression |
| MEDIUM | Medium compression |
| NO | No compression |
| TRUE | High compression |
| YES | High compression |
Depending on the degree of compression requested, the build uses either block compression or a combination of block and key-phrase compression. Block compression compresses the topic data into predefined units known as blocks. Key-phrase compression combines repeated phrases found within the source file(s). The compiler creates a phrase-table file with the .PH extension if one does not already exist. If the compiler finds a file with the .PH extension, it uses that file for the current compilation. Because the .PH file speeds up the compression process when little text has changed since the last compilation, you might want to keep the phrase file if you compile the same Help file several times with compression. However, you will get maximum compression if you delete the .PH file before starting each build.
[OPTIONS]