You can search for identifiers within the package.
in-package search v0.2.0
val file : Stdlib.Lexing.lexbuf -> AltErgoLib.Parsed.file
val expr : Stdlib.Lexing.lexbuf -> AltErgoLib.Parsed.lexpr
val trigger : Stdlib.Lexing.lexbuf -> AltErgoLib.Parsed.lexpr list * bool