Double-click for bold

[firstcasualty]

Is there a way to attach a particular formatting command to
double-click, rather than it editing the cell's contents? For
instance, emboldening a row/column/cell just by double-clicking it?

 

[The_Fakir_42]

No but you can use the "paintbrush" tool :
1) Select a cell which is in the format (border / font / ...) you want to
use.
2) Double-click on the paintbrush tool.
3) every cell or cell-group you select from now on will have this style
applied to it.
4) when you are finished, click once on the paintbrush tool.

 

[firstcasualty]

Nice one - cheers

 

[CyberTaz]

You might also try Ctrl+B after selecting the cell(s).