Meta commands were added to support MIDI files and System exclusive commands were provided for vendors to add features that were implemented by their hardware.
需要增加 Meta命令来支持MIDI文件，并提供一些系统高级命令，增加厂商的特性，这些特性由他们的硬件系统实现。
Meta commands were added to support MIDI files and System exclusive commands were provided for vendors to add features that were implemented by their hardware.
需要增加 Meta命令来支持MIDI文件，并提供一些系统高级命令，增加厂商的特性，这些特性由他们的硬件系统实现。
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