In the SystemFive Version 7.0.0 release, a spell checker was implemented but this also disabled the Mouse right-click function. However, you can still use keyboard shortcuts to copy and paste.
Starting Release Version 220.127.116.11, a setting had been included to disable Spell Checker.
Go to Setup Tools > Configuration > Setup Registry
A warning box will prompt, click on "YES" button to continue
From the selection of entries from the left hand box, look for "FEATUREFLAG" and select it.
SPELLCHECK entry should appear at the bottom on the right. Double-Click SPELLCHECK to edit it
Set "Edit Key" field to "N" and click OK button to save
Now click EXIT button on top and relaoad SystemFive.