Erlang Programming/Creating Web Applications with yaws/Out function

The out/1 function is called by Yaws as an entering point in any module that the author of a web application has written.

The applied argument supplied to out/1 is the arg data structure, this record contains the data of the request made to Yaws that resulted in the out/1 function call.

Yaws parses the returning value of the out/1 function and takes the appropriate action depending on the returning value, hence there is only a certain number of valid return values that can be sent from out/1

{html, DeepList} {ehtml, Term} {content, MimeType, Content} {streamcontent, MimeType, FirstChunk} {streamcontent_with_timeout, MimeType, FirstChunk, Timeout} {header, H}             {connection, What} {location, Url} {cache_control, What} {set_cookie, Cookie} {content_type, MimeType} {content_length, Len} {header, "My-X-Header: gadong"} {allheaders, HeaderList} {status, Code} break ok      {redirect, Url} {redirect_local, Path} {get_more, Cont, State} {page, Page} {page, {Options, Page}} {ssi, File, Delimiter, Bindings} {bindings, [{Key1, Value2}, {Key2, Value2} .....]} {yssi, YawsFile} [ListOfValues]