This block category contains blocks used to manipulate string data (sequences of letters, digits, and special characters).
This category contains Concat String blocks, which take two strings as input and then merge them together into a single string, which is then output.
It also contains String Contains blocks, which take two strings as input, and check whether the first string contains the second string as a substring (the way that the string "inigo montoya" contains the string "go monto").
Finally, this category includes Replace String In String blocks, which allow you to search through a string and replace every instance of some substring with some other third string. These are especially useful for substituting calculated values into textual messages.