diff --git a/Sensor-API.md b/Sensor-API.md
index ad6f6037..1c0a36ef 100644
--- a/Sensor-API.md
+++ b/Sensor-API.md
@@ -245,4 +245,9 @@ This functions checks if the I2C address `addr` is in use.
 
 ## Useful pre-processor directives
 ### PSTR("string")
-This pre-processor directive saves RAM by storing strings in flash instead of RAM.
\ No newline at end of file
+This pre-processor directive saves RAM by storing strings in flash instead of RAM.
+
+const char MyTextStaticVariable[] PROGMEM = "string";
+This pre-processor directive saves RAM by storing strings in flash instead of RAM.
+
+You may then reference them directly (if the type matches the parameter required) or force it to 4 byte alignment by using the variable as FPSTR(MyTextStaticVariable)