Fatal errors (H1xxx) cause HELPMAKE to stop execution. No output file is produced.This section lists error messages generated by the Microsoft Help File Maintenance Utility (HELPMAKE):
Fatal errors (H1xxx) cause HELPMAKE to stop execution. No output file is produced.
Errors (H2xxx) do not prevent an output file from being produced, but parts of the conversion are not completed.
Warnings (H4xxx) do not prevent an output file from being produced, but problems may exist in the output.