ISTool

Hi

Thanks for taking up the maintenance of this fine tool. I had reported in
5.2x times that the calltips.txt file needs [functions] as the very first
line of the file for the tool tips to come up automatically. I just
confirmed this in 5.3.0 and the tooltip for me appears only after I
modified the text file. If this is not the case please let me know how was
I supposed to use the text file by default.

Thanks and keep up the good work.

Kind regards
Bhavbhuti