Hi
In LyX you use branches to accomplish this.
In document->settinsg make a new branch, mark the text
with the branch tool under insert->branch. When you
only want to print the equation deactivate the branch.
When you want to print the all, activate the branch.
For more detail see the documentat
For a class I am teaching, I would like to be able to generate a PDF
file that only has the displayed equations of a LyX file without
losing the ability to generate a PDF file from the whole Lyx file,
including text between displayed equations. In Word, I would
accomplish this by considering everyt