diff --git a/src/SlaveLogParser.jl b/src/SlaveLogParser.jl
index 85fb8fe..db8da29 100644
--- a/src/SlaveLogParser.jl
+++ b/src/SlaveLogParser.jl
@@ -1,5 +1,7 @@
 """
 Parse QAQC JATHub slave log.
+
+See [`parse_slavelog_file`](@ref) for the main function.
 """
 module SlaveLogParser
 
@@ -384,6 +386,9 @@ end
     parse_slavelog_file(filename::AbstractString)
 
 Main function to parse slave log file.
+Returns `NamedTuple` with keys `adtp`, `power`, `recov` and their values are `Vector` of each results.
+For a single run result, these `Vector`s have only one element and for a hundred(extra) runs, the lengths are usually 100.
+For details on results for each section, see documents on dedicated types.
 """
 function parse_slavelog_file(filename::AbstractString)
     lines_iter = Iterators.Stateful(eachline(filename))