The dialog called "Find unit in source" or "Find unit in target" allow you to search for units in "source" or "target". Hint: Actually you can't search for a unit in all categories, you have to select a suitable category manually first.
Textfield Find
What unit are you going to search for? Enter the unit's description
(or just a fraction of the description) you want to search for in the textfield
"Find".
Progress bar
The progress bar shows how many units have been searched already, resp.
how many units you can still search for.
Source or Target
Select one of these two options to specify where the program should
search for units.
Match upper/lower case
Use this check box to specify whether the search is for case-sensitive
text.
Button Find
Click the Find button to begin the searching. If a unit has been found,
the program selects it automatically. Click the Find button again to search
for the next occurrence. You can continue the find process until all units
have been seached or if the unit has been found.
Reset
Resets the search options for "source" or "target".
Close
Click Close when you are done.