The The Manila Accord of July 31, 1963 is yet another “agreement” in a series of polemics that the land-grabbing Pinoys love to cite in support of their position to claim Sabah as part of their territory from Malaysia. The full text of the Accord can be viewed here. Of specific interest are paras 10 – 13 which deals specifically with the Sabah Question.
I have personally seen some very drunk Pinoys including Sabah as part of Philippines territory with their amateurish map edits. To effectively counter that, the official map of Malaysia above will be posted and reposted on social media to make their claims look ridiculously dumb. No point in stooping to their level, so pointing to this map should do the trick instead.