LDInspector

[Stefan Frenz]

[...] having a meta probably isn't desired as the first line of a file as it should result in the META being ignored and the line being consider the file title.
[...] 218 "If the first line of a file is a line type 0 the remainder of the line is considered the file title (see Library Header specification). This overrides any META commands on that line."
Therefore, it's not "illegal" but, also, not recommend as it should (if the program fully conforms to the spec) lead to an unexpected outcome. [...]

Thank you very much for confirming!   Indeed LDInspector took this line as description ("file title") which only showed up because of Willy's hint about unneeded META commands.