I wonder if someone could help on some questions about `GC` on `firefox`. **Q1-** Is possible to call the action performed when I click on the button `GC` using javascript? https://i.stack.imgur.com/JgoNx.png **Q2-** on `about:config` there's an option `javascript.options.gc_delay.full`, is this option the same than clicking on the button `gc` on `about:memory`? https://i.stack.imgur.com/dimKW.png **Q3-** I'm searching about of what of these enumerated options does, and found that: `1-` Is the default amount of time to wait from the user being idle to starting a shrinking GC. `2-` `javascript.options.gc_delay` ?? `3-` `javascript.options.gc_delay.full` ?? `4-` `javascript.options.ion.full.threshold` ?? If someone knows the answer to these questions.