The InFocus IN138HD supplies keystone correction for graphic alignment. Press the "Keystone" button within the handheld remote control or maybe the projector and use the arrow buttons to adjust the keystone till the image appears rectangular and without distortion. 4. This handbook is out there in the following languages: English. https://dominickofroe.onzeblog.com/28219006/manual-article-review-is-required-for-this-article