The string of characters you typed— mnbvcxzlkjhgfdsapoiuytrewqwertyuiopasdfghjklzxcvbnm —is a common keyboard mash often used as a sign of extreme boredom . It involves typing all the letters of a standard QWERTY keyboard in reverse or sequential order.
This particular sequence is a "snake" or "zigzag" across the three rows of a keyboard: : The bottom row, typed from right to left. mnbvcxzlkjhgfdsapoiuytrewqwertyuiopasdfghjklzxcvbnm
: Often used by developers as "placeholder text" (similar to Lorem Ipsum ) to test how long strings of text wrap on a screen. Purpose : Often used by developers as "placeholder
But the string doesn't stop there. Next comes qwertyuiop — the . Then asdfghjkl — the middle row forwards (but wait, the original text says asdfghjklzxcvbnm – yes, the middle row completely, followed immediately by the bottom row forwards zxcvbnm ). Then asdfghjkl — the middle row forwards (but