I must apologize. The forum website is sometimes unpredictable. I check it at least twice a day, and your first message did not come up until your follow-up arrived.
The sign for a shift is the same as a portamento (4, 1). The caret for a half-step is not standard music notation, so you have to make something up, and I think your word-sign h is intuitive and sensible. Congratulations.