png_const_unknown_chunkp

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
version(!PNG_VERSION_INFO_ONLY)
extern (C)
static if(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED || PNG_USER_CHUNKS_SUPPORTED)
alias png_const_unknown_chunkp = const(png_unknown_chunk)*

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