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<http://www.minigui.com/doc-api-ref-minigui-sa-4.0.0/html/group__complex__scripts.html>
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Note that, the white space rule, character transformation rule, word breaking rule,
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line breaking policy, and layout flags used by the new APIs conform
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to the CSS Text Module Level 3 specification:
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<https://www.w3.org/TR/css-text-3/>
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## Internals
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These new APIs provide a very flexible implementation for your apps
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## Restrictions
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The current implementation of `CreateLayout` does not provide the support
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for the following layout flags:
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- `GRF_HANGING_PUNC_FORCE_END`
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- `GRF_HANGING_PUNC_ALLOW_END`
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- `GRF_HANGING_PUNC_OPEN`
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- `GRF_HANGING_PUNC_CLOSE`
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- `GRF_SPACES_KEEP`
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- `GRF_SPACES_REMOVE_START`
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- `GRF_SPACES_REMOVE_END`
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- `GRF_SPACES_HANGE_END`
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When you use the basic shaping engine, only `GRF_TEXT_ORIENTATION_UPRIGHT`
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flag is supported, and the basic shaping engine can not support scripts
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which need to re-position the glyphs, such as Indic, Tibetan. For this
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purpose, you must use the complex shaping engine with TrueType/OpenType fonts.
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