diff --git a/FM-broadcast-radio-receiver.md b/FM-broadcast-radio-receiver.md
index eee803a..1589414 100644
--- a/FM-broadcast-radio-receiver.md
+++ b/FM-broadcast-radio-receiver.md
@@ -33,4 +33,12 @@ Start with `F` + `* Scan` or long press `* Scan`
 The radio scans for stations and stores the first 20 stations in memory. Scanning starts at the low side of the band. Initiating auto-scan will delete previously stored channels. `Exit` ends autoscan.
 ## Manual scan 
 
-Short press `* Scan` starts manual scan. The radio scans from the current frequency up until a station is received. You can continue scanning in any direction using arrow keys. `Exit` stops scanmode.
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+Short press `* Scan` starts manual scan. The radio scans from the current frequency up until a station is received. You can continue scanning in any direction using arrow keys. `Exit` stops scanmode.
+
+# Button functions
+
+* `1 BAND` - switch bands (frequency ranges)
+* `3 VFO/MR` - switch frequency/memory mode
+* `* SCAN`
+   * short press - start single scan
+   * long press - start auto scan (all memory channels will be deleted and replaced with scan result)
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