I think that for entertainment or learning purposes typing is muttar since it isn’t actual ksivah rather a combination of maaseh hedyot and tzorchei moed. But does anyone know if one must be careful that every mouse click and letter must be for ztorchei moed? Or does it fall under one act of tzarchei moed?
If the issur is havarah then some hold that doesn’t apply during chol hamoed at all. But tikun maneh might be an issue.
YZ