Input/Edit

Capturing existing data from term lists. Global editing functions (replace, append, delete, move, much better if feasible using conditions, wildcards, field limitation). Copy record. Duplicate detection via user-defined criteria. These are the basic required functions.

If you need to enter data in languages rich with diacriticals using extended character sets becomes essential, even more if you use different scripts, then consider Unicode compliance.

Characters-symbols table, case conversion, default values, date stamping, autocompletion, validation, spell-checking are much less essential.