Would be nice to have more descriptive *info messages for hashtables, giving the .data value like /var and /set do. This improves the usability of -s as a debugging message. It's probably overkill to have it display the -z countdown each second, but the initial value /hinc and /hdec values would be helpful too. This shouldn't need to support /hadd -b loading from binvars. A message for /hadd -b would be misleading by saying it's setting to '' when the contents aren't printable, but perhaps giving the name of the source &binvar.
//var -s %table string | hadd -ms table item data
//var %a 10 | inc -s %a %table 5 | hinc -ms table counter 5