Guys, making RGNs manually could be dangerous. I suggest using makergn.exe. It's rock-solid and doesn't try to guess regions number/section by file contents.
Also guys, RGN file has a flashing delay for each region in the region header, which is described by the following strucure:
Code:
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Nor RGN_Tool, nor makergn.exe, nor gfw.exe allow setting the delay field which can lead to problems sometimes.