I've got this problem with a level I am creating in that a moving platform just keeps moving and doesn't stop at the end of its specified range. Since its a platform that you jump and and take down so as to reach the bottom of a shaft in safety, the level is still quite playable, but you have no way of going back for the secrets I've hidden in the beginning. This is irritating me...
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"Si hanc sententiam legere potes, tum es
et optime educatus et non habitus vitam."