For setup instructions please see the fabric wiki page that relates to the IDE that you are using.
/masker
-add/remove/query
-single/range
-[blockpos]/[blockpos] [blockpos]
-clear
-reverse
-[blockpos] [blockpos]
-cover/hide
-setting
-doMaskTrace/HideAllEntities/
-True/False
-whitelist
-add/remove/check
-minecraft:block/minecraft:entity //所有方块、实体
-changetool //切换选中工具
-所有物品
-clear 清空mask
-reverse [pos1] [pos2] 反转以pos1 pos2为矩形的mask
-cover 开始透视
-hide 结束透视
-setting doMaskTrace 基于方块坐标放置mask(固定坐标)/基于方块本身放置mask(追踪方块,实时mask)
HideAllEntities 开始透视时是否隐藏所有实体
-whitelist 保护特定一类方块/实体不被透视
check 查看白名单