- r -

• RECTANGLE_COMPONENT_VERSION : com.google.appinventor.components.common.YaVersion
• RECTANGLE_PREFERRED_HEIGHT : com.google.appinventor.components.common.ComponentConstants
• RECTANGLE_PREFERRED_WIDTH : com.google.appinventor.components.common.ComponentConstants
• referenceGetThumb : com.google.appinventor.components.runtime.Slider
• refreshTime : com.google.appinventor.components.runtime.SingleValueSensor
• RENDEZVOUS_SERVER : com.google.appinventor.components.common.YaVersion
• requestCode : com.google.appinventor.components.runtime.NearField , com.google.appinventor.components.runtime.Picker
• ROADS : com.google.appinventor.components.runtime.util.MapFactory.MapType