For the first question, if you do a Time Evaluation (Test or Live) for one employee, with the "Display log" box checked, for either the month of October or January, you should be able to learn the answer from the log (wether the return key is * or =).
As for your second query, did you try using t-code pe04 to access the documentation to the Operation?
Note that it is often easier to access it from within the PCR, by selecting the Operation with your pointer and activating the "?" icon or the F1 key.