例 D-5 は、メディア ptype のシグニチャーレイアウトの例です。
ptype Acme_Calc { start "acalc"; handle: /* * Display Acme_Sheet * Include in tool's ptype if tool can display a document. */ session Display( in Acme_Sheet contents ) => start opnum = 1; session Display( in Acme_Sheet contents, in messageID counterfoil ) => start opnum = 2; session Display( in Acme_Sheet contents, in title docName ) => start opnum = 3; session Display( in Acme_Sheet contents, in messageID counterfoil, in title docName ) => start opnum = 4; /* * Edit Acme_Sheet * Include in tool's ptype if tool can edit a document. */ session Edit( inout Acme_Sheet contents ) => start opnum = 101; session Edit( inout Acme_Sheet contents, in messageID counterfoil ) => start opnum = 102; session Edit( inout Acme_Sheet contents, in title docName ) => start opnum = 103; session Edit( inout Acme_Sheet contents, in messageID counterfoil, in title docName ) => start opnum = 104; /* * Compose Acme_Sheet * Include in tool's ptype if tool can compose a document from scratch. */ session Edit( out Acme_Sheet contents ) => start opnum = 201; session Edit( out Acme_Sheet contents, in messageID counterfoil ) => start opnum = 202; session Edit( out Acme_Sheet contents, in title docName ) => start opnum = 203; session Edit( out Acme_Sheet contents, in messageID counterfoil, in title docName ) => start opnum = 204; /* * Mail Acme_Sheet * Include in tool's ptype if tool can mail a document. */ session Mail( in Acme_Sheet contents ) => start opnum = 301; session Mail( inout Acme_Sheet contents ) => start opnum = 311; session Mail( inout Acme_Sheet contents, in title docName ) => start opnum = 313; session Mail( out Acme_Sheet contents ) => start opnum = 321; session Mail( out Acme_Sheet contents, in messageID counterfoil ) => start opnum = 323; };