Hiding words in memo

Hi every body,

Could any one kindly help me what I want to do is to copy and paste a text
in a memo then to when clicking on specific button, the some words of the pasted text hide randomally. This is as a quiz and to improve one's memory
to remember what he/she has already red.

Thanking in advance for your cooperation

Best regards

Majeed

Thread moved from CodeBank forum (which is for you to post your code examples, not questions)

Note for others: based on majprogs profile, this is Delphi