-As mentioned, whenever we finish executing a Forth word, we will need to
-continue execution in the manner described in the previous section. When the
-word being executed is itself written in Forth, we need to pop the old value of
-ESI that we saved at the beginning of the definition before doing this.
+Whenever we finish executing a Forth word, we will need to continue execution
+somewhere else. When the word being executed is itself written in Forth, we need
+to pop the old value of RSI that we saved at the beginning of the definition
+before doing this.