User blog comment:ヌヌハラ/alice-tools v0.2.0/@comment-45214281-20200313112813/@comment-40164738-20200313140102

I can't actually clear up much, but point one is full-width. Japanese character sets basically require 2 "spaces" for text, thus if you try to add in roman letters it will tend to do the same (if it even supports it), so you get very wide text. When I had to deal with it, it only happened to the spaces. The command used to switch that in "System" should be ZH #: (1 being half-width, 0 full-width). I've only messed with sys3.5-3.9 games and there you add it in the decompiled .adv file on a new line. I assume it's the same for sys 4.X, but don't take my word for it.

I'll also link the page with resources, has a bunch of the older tools and a manual for sys3.9 and 4.2, should have the commands listed. https://alicesoft.fandom.com/wiki/User_blog:RottenBlock/System_Programming_Resources