[article Test Compatibility Mode
[quickbook 1.6]
[compatibility-mode 1.1]
[id compatibility]
]

[section:collision Outer]
[include compatibility-inc.quickbook]
[endsect]
[section:collision Include compatibility 1.1]
[include compatibility-inc_1_1.quickbook]
[endsect]
[section:collision Include compatibility 1.5]
[include compatibility-inc_1_5.quickbook]
[endsect]
[section:collision Include compatibility 1.6]
[include compatibility-inc_1_6.quickbook]
[endsect]