+ png_set_tRNS_to_alpha
+ png_set_text
+ png_set_unknown_chunk_location
+ png_set_unknown_chunks
+ png_set_user_transform_info
+ png_set_write_fn
+ png_set_write_status_fn
+ png_set_write_user_transform_fn
+ png_sig_cmp
+ png_start_read_image
+ png_warning
+ png_write_chunk
+ png_write_chunk_data
+ png_write_chunk_end
+ png_write_chunk_start
+ png_write_end
+ png_write_flush
+ png_write_image
+ png_write_info
+ png_write_info_before_PLTE
+ png_write_init ; deprecated
+ png_write_png
+ png_write_row
+ png_write_rows
+ png_read_init_2
+ png_write_init_2
+ png_access_version_number
+ png_init_io
+ png_convert_to_rfc1123
+ png_set_invalid
+
+; Added at version 1.2.0:
+ png_mmx_support
+ png_permit_empty_plte
+ png_permit_mng_features
+ png_get_mmx_flagmask
+ png_get_asm_flagmask
+ png_get_asm_flags
+ png_get_mmx_bitdepth_threshold
+ png_get_mmx_rowbytes_threshold
+ png_set_asm_flags
+ png_init_mmx_flags
+
+; Added at version 1.2.2:
+ png_handle_as_unknown
+
+; Added at version 1.2.2 and deleted from 1.2.3:
+; png_zalloc
+; png_zfree
+
+; Added at version 1.2.4
+ png_malloc_warn