Thank you, Devon, for your prompt reply. Another problem on this page (towards the end) is that it refers to the "Edit|Configure|Display" option to change from the Box display to the Linear display. The GtkIDE has an Edit|Configure menu... but there is no "Display" option. I expect that this has also changed from previous versions. (??)
After exploring further (after all my goal is to learn), I found a reference (in the Dictionary's Appendix) to the 9!: foreign conjunction. I was able to use "9!:(3) 5" to accomplish the objective of switching to Linear Display mode... Also, I see that "9!:(49) 1" could have allowed me to use the forms (i.e., "x.", "y.") which had originally caused me problems following along with the Primer. Being completely new to J, I have new eyes and could, perhaps, add changes to the document which would enable the next reader to have a smoother session with that document. Shall I do that? Or should I file a report somewhere with these changes? ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
