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diff --git a/src/main/java/com/google/devtools/build/lib/runtime/commands/InfoKey.java b/src/main/java/com/google/devtools/build/lib/runtime/commands/InfoKey.java
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+++ b/src/main/java/com/google/devtools/build/lib/runtime/commands/InfoKey.java
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+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.lib.runtime.commands;
+
+
+/**
+ * An enumeration of all the valid info keys, excepting the make environment
+ * variables.
+ */
+public enum InfoKey {
+  // directories
+  WORKSPACE("workspace", "The working directory of the server."),
+  INSTALL_BASE("install_base", "The installation base directory."),
+  OUTPUT_BASE("output_base",
+      "A directory for shared Blaze state as well as tool and strategy specific subdirectories."),
+  EXECUTION_ROOT("execution_root",
+      "A directory that makes all input and output files visible to the build."),
+  OUTPUT_PATH("output_path", "Output directory"),
+  BLAZE_BIN("blaze-bin", "Configuration dependent directory for binaries."),
+  BLAZE_GENFILES("blaze-genfiles", "Configuration dependent directory for generated files."),
+  BLAZE_TESTLOGS("blaze-testlogs", "Configuration dependent directory for logs from a test run."),
+
+  // logs
+  COMMAND_LOG("command_log", "Location of the log containg the output from the build commands."),
+  MESSAGE_LOG("message_log" ,
+      "Location of a log containing machine readable message in LogMessage protobuf format."),
+
+  // misc
+  RELEASE("release", "Blaze release identifier"),
+  SERVER_PID("server_pid", "Blaze process id"),
+  PACKAGE_PATH("package_path", "The search path for resolving package labels."),
+
+  // memory statistics
+  USED_HEAP_SIZE("used-heap-size", "The amount of used memory in bytes. Note that this is not a "
+      + "good indicator of the actual memory use, as it includes any remaining inaccessible "
+      + "memory."),
+  USED_HEAP_SIZE_AFTER_GC("used-heap-size-after-gc",
+      "The amount of used memory in bytes after a call to System.gc().", true),
+  COMMITTED_HEAP_SIZE("committed-heap-size",
+      "The amount of memory in bytes that is committed for the Java virtual machine to use"),
+  MAX_HEAP_SIZE("max-heap-size",
+      "The maximum amount of memory in bytes that can be used for memory management."),
+  GC_COUNT("gc-count", "Number of garbage collection runs."),
+  GC_TIME("gc-time", "The approximate accumulated time spend on garbage collection."),
+
+  // These are deprecated, they still work, when explicitly requested, but are not shown by default
+
+  // These keys print multi-line messages and thus don't play well with grep. We don't print them
+  // unless explicitly requested
+  DEFAULTS_PACKAGE("defaults-package", "Default packages used as implicit dependencies", true),
+  BUILD_LANGUAGE("build-language", "A protobuffer with the build language structure", true),
+  DEFAULT_PACKAGE_PATH("default-package-path", "The default package path", true);
+
+  private final String name;
+  private final String description;
+  private final boolean hidden;
+
+  private InfoKey(String name, String description) {
+    this(name, description, false);
+  }
+
+  private InfoKey(String name, String description, boolean hidden) {
+    this.name = name;
+    this.description = description;
+    this.hidden = hidden;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public String getDescription() {
+    return description;
+  }
+
+  public boolean isHidden() {
+    return hidden;
+  }
+}