-This mechanism let Mono remap a public key token, like the ECMA token, to
-another public key for verification. This is useful in two scenarios. First
-assemblies signed with the "ECMA key" needs to be verified by the "runtime"
+This mechanism lets Mono remap a public key token, like the ECMA token, to
+another public key for verification. This is useful in two scenarios. First,
+assemblies signed with the "ECMA key" need to be verified by the "runtime"