Your suggestion is a good one. Looks like it will work. If it doesn't I'll report back. Meanwhile, I found a good explanation of check and RECHECK (!) functions here:

http://www.melbpc.org.au/pcupdate/22...8article10.htm

According to this, all "ignores" are stored with the document until you use recheck. I'm not getting that on fragments, but I will use the above suggestion of blocking text. "Ignore All" scares me.