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Yes it is. If you encounter the abbreviation "ff." in a text, it usually means "following", yes.
The Italian musical abbreviation "ff" is fortissimo("very loudly").
FF means forte fortissimo in music!
I don't think there's a standard abbreviation of "following" but we are used to using "ff." as the abbreviation of it.
In the world of music, ff means 'fortissimo' - very loud.