Translate multithreading from Spanish to English

– Running several processes in rapid sequence within a single program, regardless of which logical method of multitasking is being used by the operating system. Because the user's sense of time is much slower than the processing speed of a computer, multitasking appears to be simultaneous, even though only one task at a time can use a computer processing cycle. ¹

– In data manipulation, a technique in which nodes in a tree data structure contain pointers to higher nodes to make traversal of the structure more efficient. ¹