LilyPond Application Usage: 2. Updating files with convert-ly

# 2. Updating files with `convert-ly`

The LilyPond input syntax is routinely changed to simplify it or improve it in different ways. As a side effect of this, the LilyPond interpreter often is no longer compatible with older input files. To remedy this, the program `convert-ly` can be used to deal with most of the syntax changes between LilyPond versions.

Andere talen: deutsch, español, français, magyar, italiano, 日本語.

#### LilyPond — Usage