Some documentation improvements.

src/main/java/li/cil/oc2/api/bus/DeviceBusElement.java

@@ -18,7 +18,7 @@ import java.util.UUID;
  * connected to this element.
  * <p>
  * This interface is relevant when implementing means to extend the bus, e.g.
- * to provide a custom cable implementation or some kind of a device container.
+ * to provide a custom cable implementation or some kind of device container.
  * <p>
  * Implementations <em>must</em> call {@link #scheduleScan()} when they become
  * invalid, e.g. due to being in a chunk that is being unloaded or the block
@@ -31,7 +31,7 @@ public interface DeviceBusElement extends DeviceBus {
      * <p>
      * This will be called by {@link DeviceBusController}s when scanning.
      * <p>
-     * Bus elements can be have multiple controllers at the same time. This is used
+     * Bus elements can have multiple controllers at the same time. This is used
      * by controllers to detect each other on the bus.
      * <p>
      * When {@link #scheduleScan()} is called, {@link DeviceBusController#scheduleBusScan()}
@@ -89,7 +89,7 @@ public interface DeviceBusElement extends DeviceBus {
      * track of the device. Note that some device types (e.g. {@link RPCDevice}s)
      * require for an ID to be provided for them to work at all.
      * <p>
-     * It is possible for multiple devices to have the same identifier. Typically
+     * It is possible for multiple devices to have the same identifier. Typically,
      * this means they represent a view on the same underlying object. How this is
      * handled depends on the device type and may or may not be supported.
      * <p>

src/main/java/li/cil/oc2/api/bus/device/data/Firmware.java

@@ -31,7 +31,7 @@ public interface Firmware extends IForgeRegistryEntry<Firmware> {
      * <p>
      * This will usually load machine code into memory at the specified start address.
      * <p>
-     * Typically only returns {@code false} when there was not enough memory to fit the firmware.
+     * Typically, only returns {@code false} when there was not enough memory to fit the firmware.
      *
      * @param memory       access to the memory map of the machine.
      * @param startAddress the memory address where execution will commence.

src/main/java/li/cil/oc2/api/bus/device/provider/BlockDeviceQuery.java

@@ -28,7 +28,7 @@ public interface BlockDeviceQuery {
     BlockPos getQueryPosition();
 
     /**
-     * The side of the block this query is performed on, if any.
+     * The world-space side of the block this query is performed on, if any.
      * <p>
      * May be {@code null} just as when requesting a capability from a {@link BlockEntity}.
      *

src/main/java/li/cil/oc2/api/capabilities/TerminalUserProvider.java

@@ -1,6 +1,10 @@
 package li.cil.oc2.api.capabilities;
 
+import li.cil.oc2.api.bus.device.provider.BlockDeviceQuery;
+import li.cil.oc2.api.bus.device.provider.ItemDeviceQuery;
+import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.level.block.entity.BlockEntity;
 
 /**
  * This interface provides access to a list of {@link Player}s that are currently
@@ -8,6 +12,10 @@ import net.minecraft.world.entity.player.Player;
  * <p>
  * For example, for computers and robots this is the list of players that currently have
  * the terminal UI opened.
+ * <p>
+ * Must be implemented by the {@link BlockEntity} or {@link Entity} that serves as the
+ * context for device creation via {@link BlockDeviceQuery}s or {@link ItemDeviceQuery}s,
+ * respectively.
  */
 public interface TerminalUserProvider {
     /**