x264 - custom encoding templates ?

i searched around but did not find an answer.

is there a way to save "new" presets (cmd line params) to call up instead of retyping or copy/pasting ? i do a lot flip/flopping between encode qualitys, i.e., LQ vs HQ, and so on for instance. it would be easier to make future adjustments to preset files as they occur.

i encode mainly with:

x264 --preset veryfast, x1, x2, x3, ... video.mkv

but would like to get it to this path if possible:

x264 LQ in_video out_video.mkv
x264 HQ in_video out_video.mkv

thank you.