Editing Alps SKCL/SKCM series (section)

===Generations===
Very broadly speaking, the series can be thought of as having three generations:

;First generation
:1983–1989; original colours, no top branding, long switchplates and dry lubricant applied to the sliders in at least some instances (first pine generation)
;Second generation
:1989–1993; replacement colours, top branding, short switchplates and potentially a change in slider plastic to remove the need for dry lubricant (second pine generation)
;Third generation
:1993–1996; removal of slits (bamboo generation)

The changes to the switches between the first and second generations did not occur collectively but progressively; combinations different from the above exist from within the transition period. The specifics of the changes around 1993 that led to MouseFan rating them lower ("bamboo" vs "pine") are not well understood.