Thanks for the reply. Below is a bit more info, just in case.
It would be useful to know to what extent Access can manage the kind of sort (search or report) query I use with PC-File, on which I based the structure of my now large database.
A typical French-to-English sort might be as follows. French field NOT empty AND Context (subject) field must in any position contain M0 (M=medical, 0 after any code means basic core vocab) i.e. general medical vocab, AND for this conference, medical testing vocab (M1) to include all basic test vocab (M10) and tissue testing and imaging (M14 and M12) but NOT animal testing (M15). But I do want M10 entries even if they also contain M15.
This I can write in seconds : fr!=" "&(c=~M0~|c=~M10~|(c=~M1~&c!=~M15~))
(I should explain that M1 so far only has those 3 subsets, so inclusion of M14 and M12 is implicit).
On another aspect,the recognition plot thickens. I tried using PCF on my old XP laptop, on which I had uninstalled the HP printer. It did not perform like a US keyboard and I could enter letter characters OK, but it gave wierd ASCII hieroglyphics when I wanted numbers (top row upper case), and I could not find numbers anywhere (so I could also not use ASCII number codes for them). The keyboard worked fine inother applications (Word etc).
Possible explanations might be that HP altered something when previously installed, or that some XP updates (which get onto my portable whenever I use it) have changed something. I thought about a possible PCF built-in time limit, but it still works fine on my ancient Win98 machine. OR of course a virus. I run Avast! Free and Spybot on the 2 XP machines. If so, it only seems to affect this program.
Best regards, JT