The tree representation is 5!:4 and it was implemented in v4.0, 1991-11-23 http://www.jsoftware.com/help/release/status.htm#v4.0
Also described in comp.lang.apl on 1991-09-28 (at the time the J Forum did not exist). http://groups.google.com/group/comp.lang.apl/browse_thread/thread/5f1c1df7bd72fe51/32691205433c3152 On Sun, Dec 2, 2012 at 1:00 PM, Joey K Tuttle <j...@qued.com> wrote: > > The Tree view is great too (was it really there in 602??) > > > > Yes - > > From ... j701/addons/docs/help/release/**status.htm#v5.1 > > Changes in Version 5.1, 1992 07 28 > ... > 5!:5 implemented > ... > > Browsing the release notes, (Rel) on the DoJ menu, is a good history > lesson. > > On 2012/12/01 22:00 , Alex Giannakopoulos wrote: > >> Thanks Ric, >> >> I'd been looking all over the config files, but somehow I missed it. >> The Tree view is great too (was it really there in 602??) >> >> A fantastic feature, this too should have pride of place in any J intro >> blurb. Man, 701 seriously undersells itself! >> >> >> On 1 December 2012 12:24, Ric Sherlock <tikk...@gmail.com> wrote: >> >> You can alter the display like you could in j602 by setting the noun >>> DisplayForm in the base.cfg file. You can access it from the jgtk menu >>> using >>> Edit|Configure|Base >>> >>> ------------------------------**------------------------------** >> ---------- >> For information about J forums see >> http://www.jsoftware.com/**forums.htm<http://www.jsoftware.com/forums.htm> >> >> ------------------------------**------------------------------** > ---------- > For information about J forums see > http://www.jsoftware.com/**forums.htm<http://www.jsoftware.com/forums.htm> > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
