ID Number: Q85676
3.10
WINDOWS
Summary:
The following lists the limits of the Windows Help application,
version 3.1. These limits are subject to change in future versions.
Paragraph size(1): approximately 32,000 bytes
Topic title string length: 127 characters
Topics per RTF source file: approximately 32,700
Topics per help file: 42,000,000
By-reference bitmaps per help file : 32,767
Help file size: approximately 2,157,000,000 bytes (2 gigabytes)
Keywords per help file: limited only by file size
Keyword length: 255 bytes
Topics per keyword(2): 32,767
Browse sequence length: limited only by the number of topics
Bookmarks per help file: limited only by file size
Annotations per topic: 1
Annotations per help file: 32,767
History list length: 40 topics
Text that can be copied to clipboard: limited only by machine memory
Macro length: 512 characters
Main windows per topic: 1
Secondary windows per topic: 5
(1) The maximum paragraph size includes graphics pasted into the RTF
source. Therefore, each pasted graphic is limited to 32,000 bytes. To
work around this limitation, import large bitmaps by reference.
(2) Performance degrades for files with more than several hundred
topics. The Search dialog box displays a maximum of 400 topics.
Additional reference words: 3.10 HC HCP.EXE HC31.EXE WinHelp