Added `lcd_menu` format description

Added some documentation how the LCD menus look like and added max character values for translations.

There are more things needed and also the placement in the code is an open task. Depending on the decision if we use `messages.c/h`

Firmware/ultralcd.cpp

@@ -1826,6 +1826,12 @@ void lcd_menu_extruder_info()                     // NOT static due to using ins
 
 static void lcd_menu_fails_stats_mmu()
 {
+//|01234567890123456789|
+//| Main               | c=18
+//| Last print         | c=18
+//| Total              | c=18
+//|                    |
+//----------------------
 	MENU_BEGIN();
 	MENU_ITEM_BACK_P(_T(MSG_MAIN));
 	MENU_ITEM_SUBMENU_P(_i("Last print"), lcd_menu_fails_stats_mmu_print);
@@ -1835,12 +1841,12 @@ static void lcd_menu_fails_stats_mmu()
 
 static void lcd_menu_fails_stats_mmu_print()
 {
-//01234567890123456789
-//Last print failures
-// MMU fails  000
-// MMU load fails  000
-//
-//////////////////////
+//|01234567890123456789|
+//|Last print failures | c=20
+//| MMU fails:      000| c=15
+//| MMU load fails: 000| c=15
+//|                    |
+//----------------------
 	lcd_timeoutToStatus.stop(); //infinite timeout
     uint8_t fails = eeprom_read_byte((uint8_t*)EEPROM_MMU_FAIL);
     uint16_t load_fails = eeprom_read_byte((uint8_t*)EEPROM_MMU_LOAD_FAIL);
@@ -1851,12 +1857,12 @@ static void lcd_menu_fails_stats_mmu_print()
 
 static void lcd_menu_fails_stats_mmu_total()
 {
-//01234567890123456789
-//Last print failures
-// MMU fails  000
-// MMU load fails  000
-//
-//////////////////////
+//|01234567890123456789|
+//|Total failures      | c=20
+//| MMU fails:      000| c=15
+//| MMU load fails: 000| c=15
+//| MMU power fails:000| c=15
+//----------------------
 	mmu_command(MmuCmd::S3);
 	lcd_timeoutToStatus.stop(); //infinite timeout
     uint8_t fails = eeprom_read_byte((uint8_t*)EEPROM_MMU_FAIL_TOT);
@@ -1869,12 +1875,12 @@ static void lcd_menu_fails_stats_mmu_total()
 #if defined(TMC2130) && defined(FILAMENT_SENSOR)
 static void lcd_menu_fails_stats_total()
 {
-//01234567890123456789
-//Total failures
-// Power failures  000
-// Filam. runouts  000
-// Crash  X 000  Y 000
-//////////////////////
+//|01234567890123456789|
+//|Last print failures | c=20
+//| Power failures: 000| c=14
+//| Filam. runouts: 000| c=14
+//| Crash   X:000 Y:000| c=7 for Crash
+//----------------------
 	lcd_timeoutToStatus.stop(); //infinite timeout
     uint16_t power = eeprom_read_word((uint16_t*)EEPROM_POWER_COUNT_TOT);
     uint16_t filam = eeprom_read_word((uint16_t*)EEPROM_FERROR_COUNT_TOT);
@@ -1887,12 +1893,12 @@ static void lcd_menu_fails_stats_total()
 
 static void lcd_menu_fails_stats_print()
 {
-//01234567890123456789
-//Last print failures
-// Power failures  000
-// Filam. runouts  000
-// Crash  X 000  Y 000
-//////////////////////
+//|01234567890123456789|
+//|Last print failures | c=20
+//| Power failures: 000| c=14
+//| Filam. runouts: 000| c=14
+//| Crash   X:000 Y:000| c=7 for Crash
+//----------------------
 	lcd_timeoutToStatus.stop(); //infinite timeout
     uint8_t power = eeprom_read_byte((uint8_t*)EEPROM_POWER_COUNT);
     uint8_t filam = eeprom_read_byte((uint8_t*)EEPROM_FERROR_COUNT);
@@ -1912,6 +1918,12 @@ static void lcd_menu_fails_stats_print()
  */
 static void lcd_menu_fails_stats()
 {
+//|01234567890123456789|
+//| Main               | c=18
+//| Last print         | c=18
+//| Total              | c=18
+//|                    |
+//----------------------
 	MENU_BEGIN();
 	MENU_ITEM_BACK_P(_T(MSG_MAIN));
 	MENU_ITEM_SUBMENU_P(_i("Last print"), lcd_menu_fails_stats_print);
@@ -1937,6 +1949,12 @@ static void lcd_menu_fails_stats()
  */
 static void lcd_menu_fails_stats()
 {
+//|01234567890123456789|
+//|Last print failures | c=20
+//| Filam. runouts: 000| c=15
+//|Total failures      | c=20
+//| Filam. runouts: 000| c=15
+//----------------------
 	lcd_timeoutToStatus.stop(); //infinite timeout
     uint8_t filamentLast = eeprom_read_byte((uint8_t*)EEPROM_FERROR_COUNT);
     uint16_t filamentTotal = eeprom_read_word((uint16_t*)EEPROM_FERROR_COUNT_TOT);
@@ -1947,6 +1965,11 @@ static void lcd_menu_fails_stats()
 #else
 static void lcd_menu_fails_stats()
 {
+//|01234567890123456789|
+//| Main               | c=18
+//|                    |
+//|                    |
+//----------------------
 	lcd_timeoutToStatus.stop(); //infinite timeout
 	MENU_BEGIN();
 	MENU_ITEM_BACK_P(_T(MSG_MAIN));
@@ -1964,6 +1987,12 @@ extern char* __malloc_heap_end;
 
 static void lcd_menu_debug()
 {
+//|01234567890123456789|
+//|RAM statistics      | c=20
+//| SP_min:        0000| c=14
+//| heap_start:    0000| c=14
+//| heap_end:      0000| c=14
+//----------------------
 #ifdef DEBUG_STACK_MONITOR
 	lcd_home();
 	lcd_printf_P(PSTR("RAM statistics\n" " SP_min: 0x%04x\n" " heap_start: 0x%04x\n" " heap_end: 0x%04x"), SP_min, __malloc_heap_start, __malloc_heap_end);
@@ -1975,6 +2004,12 @@ static void lcd_menu_debug()
 
 static void lcd_menu_temperatures()
 {
+//|01234567890123456789|
+//| Nozzle:        000°| c=14
+//| Bed:           000°| c=14
+//| Ambient:       000°| c=14
+//| PINDA:         000°| c=14
+//----------------------
 	lcd_timeoutToStatus.stop(); //infinite timeout
 	lcd_home();
 	lcd_printf_P(PSTR(" %S:   %d%c \n" " %S:      %d%c \n"), _i("Nozzle"), (int)current_temperature[0], '\x01', _i("Bed"), (int)current_temperature_bed, '\x01');
@@ -1994,6 +2029,12 @@ static void lcd_menu_temperatures()
 #define VOLT_DIV_REF 5
 static void lcd_menu_voltages()
 {
+//|01234567890123456789|
+//|                    |
+//| PWR:         00.0V | c=12
+//| Bed:         00.0V | c=12
+//|                    | 
+//----------------------
 	lcd_timeoutToStatus.stop(); //infinite timeout
 	float volt_pwr = VOLT_DIV_REF * ((float)current_voltage_raw_pwr / (1023 * OVERSAMPLENR)) / VOLT_DIV_FAC;
 	float volt_bed = VOLT_DIV_REF * ((float)current_voltage_raw_bed / (1023 * OVERSAMPLENR)) / VOLT_DIV_FAC;
@@ -2006,6 +2047,12 @@ static void lcd_menu_voltages()
 #ifdef TMC2130
 static void lcd_menu_belt_status()
 {
+//|01234567890123456789|
+//| Belt status        | c=19
+//|  X:            000 | c=13
+//|  Y:            000 | c=13
+//|                    | 
+//----------------------
 	lcd_home();
     lcd_printf_P(PSTR("%S\n" " X %d\n" " Y %d"), _i("Belt status"), eeprom_read_word((uint16_t*)(EEPROM_BELTSTATUS_X)), eeprom_read_word((uint16_t*)(EEPROM_BELTSTATUS_Y)));
     menu_back_if_clicked();
@@ -2827,6 +2874,12 @@ void lcd_menu_statistics()
 {
 	if (IS_SD_PRINTING)
 	{
+	//|01234567890123456789|
+	//|Filament used:      | c=19
+	//|    0000.00m        |
+	//|Print time:         | c=19
+	//|    00h : 00m : 00s | 
+	//----------------------
 		const float _met = ((float)total_filament_used) / (100000.f);
 		const uint32_t _t = (_millis() - starttime) / 1000ul;
 		const int _h = _t / 3600;
@@ -2844,6 +2897,12 @@ void lcd_menu_statistics()
 	}
 	else
 	{
+	//|01234567890123456789|
+	//|Total filament:     | c=19
+	//|    0000.00m        |
+	//|Total print time    | c=19
+	//|    00d : 00h : 00m | 
+	//----------------------
 		unsigned long _filament = eeprom_read_dword((uint32_t *)EEPROM_FILAMENTUSED);
 		unsigned long _time = eeprom_read_dword((uint32_t *)EEPROM_TOTALTIME); //in minutes
 		uint8_t _hours, _minutes;
@@ -2952,10 +3011,10 @@ static void lcd_move_e()
 static void lcd_menu_xyz_y_min()
 {
 //|01234567890123456789|
-//|Y distance from min:|
+//|Y distance from min | c=19
 //|--------------------|
-//|Left:      N/A      |
-//|Right:     N/A      |
+//|Left:       00.00mm | c=10
+//|Right:      00.00mm | c=10
 //----------------------
 	float distanceMin[2];
     count_xyz_details(distanceMin);
@@ -3024,6 +3083,12 @@ static void lcd_menu_xyz_skew()
  */
 static void lcd_menu_xyz_offset()
 {
+//|01234567890123456789|
+//|[0;0] point offset  | c=20
+//|--------------------|
+//|X:          000.00mm| c=10
+//|Y:          000.00mm| c=10
+//----------------------
     lcd_set_cursor(0,0);
     lcd_puts_P(_i("[0;0] point offset"));////MSG_MEASURED_OFFSET
     lcd_puts_at_P(0, 1, separator);