You can emphasize and de-emphasize a tag by enclosing them in a parenthesis, adding a colon, and the value.
(tag:1.2) ~= ((tag))
(tag:0.8) ~= [[tag]]
If you are to use the []
to de-emphasize, you would need to escape them with \
which is a hassle, so I recommend just using the parenthesis.
Syntax is from Automatic1111 Stable Diffusion WebUI
Also see the text-to-image-plugin
prompting guide on the /hub
Learn Tab.