Thanks to berlitz and the referred article, I was induced to create helpful custom symbols in the gtol.sym file.
You should pay attention to the following:
- it is not an easy task. A lot of trial and error to draw the lines and text in the intended position;
- make a backup of the original file;
- like berlitz said, these symbols only work for you, unless you copy the gtol.sym file to others. Make a backup of the new file to retrieve it on new installations of solidworks (verify if different versions of SW have different original gtol.sym files; if so, do not overwrite: open the files and copy the symbols definition of the old file into the new installed file);
- you must not have sintax errors. If you have one, SW will not start. It will give an error message whitch as nothing to do with the actual cause. If you have an error starting SW after editing gtol.sym, you probably have made a syntax error and you should re-edit the file and make the necessary corrections. If you don't find the error, revert to the original file and... try again in other day.
Regards