what is "cram" in ankidroid statistics?

[Paul Ridgway]

Ive checked the anki manual, ankidroid manual and FAQ ankidroid, no luck:

what is the meaning of "cram" in ankidroid statistics? under "Review Time" is shown that I have spend some time cramming.  What constitutes cramming?

Under Review Counts, the vertical axis is "Cumulative answers".  Is that the number of reviews Ive answered (by hitting an answer button)? 

If so what kind of review is considered a cram review?

Thank you

[Mike Hardy]

"cram" has been replaced in general with "filtered deck" - it used to be called "cram" but then the feature grew in power and it was no longer just "studying ahead". Our statistics graphs may be behind in that aspect but all of ankidroid statistics will be replaced with a re-use (vs re-implement, an important difference) of Anki Desktop statistics soon so this may never catch up in AnkiDroid

Here's a relevant PR https://github.com/ankidroid/Anki-Android/pull/7034