PLT problem with GRID X

Frank Marshall came up with an instance where "GRID X # #" had no effect. After exchanging e-mail with Allyn we established that :
1. For multi-window plots "WINDOW ALL" followed by "GRID X" does not work.
2. "GRID X" doesn't work if the X-axis is logarithmic.

Remember to contact Allyn after he returns to work on Jan 4 to get a new version of PLT.

Keywords: lheasoft, plt