I frequently use
:ab to save typing time during coding. For e.g.
:ab mat matrix to replace mat by matrix every time I type mat.
Is there any way of storing and loading the abbreviations I create for a given file? I want something to store my abbreviations as and when I declare them and also reload them when I open a file. I would prefer the abbreviations to be "local" to a file rather than global but I can work around this if necessary.