Help 3.0 Error Message Categories

In Windows Help version 3.0, errors that occur during processing of the Help project file are prefixed with the letter P and appear as in the following examples:

Error P1025: line...7 of filename.HPJ : Section heading sectionname unrecognized.
Warning P1039: line...38 of filename.HPJ : [BUILDTAGS] section missing.

Errors that occur during processing of the RTF topic file(s) are prefixed with the letter R and appear as in the following examples:

Error R2025: File environment error.
Warning R2501: Using old key-phrase table.