The concept of Now

[Art]

...Hal is rather sensitive to changes if one does not know what they are doing.
Too bad there's no tech. manual - not for code, but for all the tables.

One can use the Wiki link as a really nice resource for learning a bit more about Hal.
It was created by a former active member named, Bill DeWitt who also wrote several
plug-ins for Hal as well.
http://ultrahalscript.pbworks.com/w/page/11906966/FrontPage