1[article Include Test 2 [quickbook 1.5] 3 [id include-test] 4] 5 6[include include-inc-1_5.quickbook] 7[include .\include-inc.quickbook] 8[include:foo include-inc.quickbook] 9[include empty-inc.quickbook] 10 11[def __defined__] 12 13[? __undefined__ [include:foo1 include-inc.quickbook] ] 14[? __undefined__ [include:foo1 not_a_file.quickbook] ] 15[? __defined__ 16 Just trying including in a conditional macro. [include:foo2 include-inc.quickbook] 17 With some text around it.] 18