diff --git a/simulators/config/grammar.json b/simulators/config/grammar.json
index c5a739b..2206594 100644
--- a/simulators/config/grammar.json
+++ b/simulators/config/grammar.json
@@ -2,208 +2,57 @@
 	"Telescope" : {
 		"set": [
 			{
-				"name": "SPEED",
-				"nb_param": [2, 3],
-				"param_type": "float",
-				"desc": "description",
-				"desc": "description",
-				"help": "help"
-			},
-			{
-				"name": "COORDS",
-				"nb_param": [2, 3],
-				"param_type": "float",
-				"desc": "description",
-				"help": "help"
-			},
-			{
-				"name": "TRACKING_SPEED",
-				"nb_param": [2, 3],
-				"param_type": "float",
-				"desc": "description",
-				"help": "help"
-			},
-			{
-				"name": "ACCEL",
-				"nb_param": [2, 3],
-				"param_type": "float"
-			},
-			{
-				"name": "ROTATOR",
-				"nb_param": [1],
-				"param_type": "EnumRotator"
-			},
-			{
-				"name": "FOCUS",
-				"nb_param": [1],
-				"param_type": "float"
-			},
-			{
-				"name": "MOVE_MODE",
-				"nb_param": [1],
-				"param_type": "EnumMoveMode"
-			},
-			{
-				"name": "COORDS_FRAME",
-				"nb_param": [1],
-				"param_type": "EnumCoordsFrame"
+				"name": "COORD_RADEC",
+				"label": "Upload R.A., Dec. to the mount",
+				"input_label": [
+					{
+						"R.A.":[15, "Degrees", "Right Ascension"], 
+						"Dec.":[15, "", ""],
+						"Equ.":[15, "", ""]
+					}
+				],
+				"help": "Upload R.A., Dec. to the mount. Use TELESCOPE DO START to slew the mount."
+			},
+			{
+				"name": "COORD_HADEC",
+				"label": "Upload apparent hour angle declination to the mount",
+				"input_label": [
+					{
+						"H.A.":[15, "", ""],
+						"Dec.":[15, "", ""]
+					}
+				],
+				"help": "Upload H.A., Dec. to the mount. Use TELESCOPE DO START to slew the mount."
+			},
+			{
+				"name": "COORD_ALTAZ",
+				"label": "Upload apparent hour angle declination to the mount",
+				"input_label": [
+					{
+						"Az.":[15, "", ""],
+						"Elev.":[15, "", ""]
+					}
+				],
+				"help": "Upload Az., elev. to the mount. Azimuth=0 at South. Use TELESCOPE DO START to slew the mount."
 			}
-
-		],		
-		"get": [
-			"POSITION",
-			"STATUS",
-			"SETUP"
 		],
-		
-		"do": [
-			{
-				"name": "DOORS",
-				"nb_param": [1],
-				"param_type": "bool"
-			},
-			{
-				"name": "START",
-				"nb_param": [0],
-				"param_type": ""
-			},
-			{
-				"name": "ABORT",
-				"nb_param": [0],
-				"param_type": ""
-			},
-			{
-				"name": "STOP",
-				"nb_param": [0],
-				"param_type": ""
-			},
+		"get": [
 			{
-				"name": "HOMING",
-				"nb_param": [0],
-				"param_type": ""
+				"name": "COORD_RADEC",
+				"label": "dowload R.A., Dec. from the mount",
+				"input_label": [],
+				"help": "Download R.A., Dec. to the mount."
 			}
-			
-		]
-	},
-	
-	"Camera" : {
-		"set" : [
-			{
-				"name": "WINDOW",
-				"nb_param": [4],
-				"param_type": "int"
-			},
-			{
-				"name": "READMODE",
-				"nb_param": [1],
-				"param_type": "EnumReadMode"
-			},
-			{
-				"name": "FILENAME",
-				"nb_param": [1],
-				"param_type": "str"
-			},
-			{
-				"name": "HEADER",
-				"nb_param": [1],
-				"param_type": "dict"
-			},
-			{
-				"name": "READOUT_FREQUENCY",
-				"nb_param": [1],
-				"param_type": "float"
-			},
-			{
-				"name": "FILTER",
-				"nb_param": [1],
-				"param_type": "EnumFilter"
-			}	
-		],
-		"get" : [
-			"STATUS",
-			"TEMPERATURE",
-			"SETUP",
-			"TIMER"
-		],
-		
-		"do" : [
-			{
-				"name": "COOLER",
-				"nb_param": [2],
-				"param_type": "float"
-			},
-			{
-				"name": "SHUTTER",
-				"nb_param": [1],
-				"param_type": "EnumShutter"
-			},
-			{
-				"name": "START",
-				"nb_param": [0],
-				"param_type": ""
-			},
-			{
-				"name": "STOP",
-				"nb_param": [0],
-				"param_type": ""
-			},
+		},
+		"do": [
 			{
-				"name": "ABORT",
-				"nb_param": [0],
-				"param_type": ""
+				"name": "START",				
+				"input_label": [],
+				"help": "Start the slew of the mount.",
 			}
-		]	
+		]
 	},
 	
-	"CameraVIS" : {
-		"set" : [
-			{
-				"name": "EXPOSURE",
-				"nb_param": [1],
-				"param_type": "int"
-			},
-			{
-				"name": "BINNING",
-				"nb_param": [2],
-				"param_type": "int"
-			}		
-		],
-		"get" : [],
-		"do" : []	
-	},
-
-	"CameraNIR" : {
-		"set" : [
-			{
-				"name": "NB_IMAGES",
-				"nb_param": [1],
-				"param_type": "int"
-			}				
-		],
-		"get" : [],
-		"do" : []	
-	},
-
-	"CameraNIR" : {
-		"set" : [
-			{
-				"name": "NB_IMAGES",
-				"nb_param": [1],
-				"param_type": "int"
-			}				
-		],
-		"get" : [],
-		"do" : []	
-	},
-
-	"PLC" : {
-		"set" : [],
-		"get" : [
-			"STATUS"
-		],
-		"do" : []	
-	},
-
 	"Enums" : {
 		"EnumReadMode" : [
 			"Ramp"
@@ -226,11 +75,7 @@
 			"Goto",
 			"Track",
 			"GotoTrack"
-		],
-		"EnumCoordsFrame" : [
-			"Hadec",
-			"Radec",
-			"Altaz"
 		]
 	}
+	
 }
--
libgit2 0.21.2