请问 env 文件中 后边的四个命令知道 ,但是前边的四个命令 是什么意思,没看懂,也没试出来; 另外,如果让选中的元件 在x 和 Y方向移动一个自定义的偏移量,应该怎么弄呢? # Bind incremental pick by grid unit functions to ctrl and shift--arrow keys alias CUp "ipick 0; ipick_to_gridunit 0 +1" alias CDown "ipick 0; ipick_to_gridunit 0 -1" alias CLeft "ipick 0; ipick_to_gridunit -1" alias CRight "ipick 0; ipick_to_gridunit +1" alias SUp "move; ipick_to_gridunit 0 +1" alias SDown "move; ipick_to_gridunit 0 -1" alias SLeft "move; ipick_to_gridunit -1" alias SRight "move; ipick_to_gridunit +1" |