In the build subdirectory, create a file named helptag.opt and put the following text into it. This information selects HelpTag options and indicates where to search for any files defined in FILE entity declarations.
onerror=go memo search=./ search=../
The onerror=go option instructs the HelpTag software to continue processing input files even if an error occurred. See "Parser Options" for an explanation of parser options. For a complete list and description of parser options, refer to the dthelptag(1) man page.
Verify that the /usr/dt/bin directory is in your search path by typing this command in a terminal window:
If the directory is not in your path, add it to your PATH environment variable. If you're not sure how to do this, refer to your system documentation or ask your system administrator.