Stdppx.Out_channelSourceval create :
?binary:??? ->
?append:??? ->
?fail_if_exists:??? ->
?perm:??? ->
string ->
out_channelval with_file :
?binary:??? ->
?append:??? ->
?fail_if_exists:??? ->
?perm:??? ->
string ->
f:(out_channel -> 'a) ->
'a