May one type on Chol Hamoed?[1]

Some Poskim[2] rule it is permitted to do so without restriction.[3] Others[4] however rule it may only be done for Holiday needs.[5] Others[6] rule it is completely forbidden with exception to those cases of which even skilled work [Maaseh Uman] is permitted.[7] According to all one should not perform a very long and strenuous job of typing.[8]

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[1] The question here is whether typing on Chol Hamoeid is considered a Maaseh Uman, or a Maaseh Hedyot- and thus permitted?

[2] Beir Moshe 7:39; Rav Farkash in his sefer writes that its permitted to type for all reasons [Thus would even be permitted if not for need of moead?] , even in Hebrew, even in ksav ashuris, as the letters on a screen are not real letters but are forms of lights, which is not considered writing.

[3] As it involves no effort

^[4] (Rav Moses Feinstein, and Sefer Shmiras Shabbos Kihelchasa)

[5] As they consider typing to be Maaseh Hedyot of which the ruling is it may only be done for a need of the holiday.

^[6] “The Laws Of Chol Hamaod“

[7] As they consider typing to be Maaseh Uman.

[8] Chol Hamoed Kehalacha