Can I lock Row heights so that inexperienced users don't inadvertently change them, losing site of some of the content, then thinking something is wrong?
You can hide the row and/or column headers so that the heights/widths
cannot be changed with a mouse.
Tools->Options: [View] tab: [ ] Rows & column headers.
OR
You can protect the sheet contents using Tools->Protection->Protect
Sheet...
There are caveats to protecting the sheet, though. You'll have to
"unlock" (Format->Cells: [Protection] tab) the cells if you want them
to be editable after the sheet is protected.
Brian Herbert Withun