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4.
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Saving an image uses XCF, GIMP's native file format (file extension <tt>.xcf</tt>). This preserves the layers and many aspects of your work-in-progress, allowing to work on it again later. Once a project is completed, you can export it as JPEG, PNG, GIF, etc.
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如果儲存一幅將來可能會再修改的圖片，可試試使用 XCF，即 GIMP 預設使用的檔案格式 (延伸檔名為 <tt>.xcf</tt>)。這樣會保留所有圖層及任何正在處理中的圖片細節。在圖片完成後，可以將它轉存為 JPEG、PNG、GIF 等等...
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:4
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5.
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Most plug-ins work on the current layer of the current image. In some cases, you will have to merge all layers (Image→Flatten Image) if you want the plug-in to work on the whole image.
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絕大多數的增效模組只會對圖片目前的圖層產生效用。在某些情況下，您必須先合併所有圖層 (圖片→圖片平面化)，增效模組才會對整幅圖片產生效用。
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:5
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6.
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If a layer's name in the Layers dialog is displayed in <b>bold</b>, this layer doesn't have an alpha-channel. You can add an alpha-channel using Layer→Transparency→Add Alpha Channel.
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如果圖層的名稱在圖層對話盒中以<b>粗體</b>顯示，表示這個圖層沒有 alpha-色版。您可以使用圖層→透明度→加入 Alpha 色版來加入 alpha-色版。
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:6
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7.
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Not all effects can be applied to all kinds of images. This is indicated by a grayed-out menu-entry. You may need to change the image mode to RGB (Image→Mode→RGB), add an alpha-channel (Layer→Transparency→Add Alpha Channel) or flatten it (Image→Flatten Image).
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並非所有效果都適用於各類圖片。當某項功能無法使用時，選單的文字會以淺灰色表示。如果需要該種效果，可能需要將圖片的色系轉為 RGB (圖片→模式→RGB)、加入透明色版 (圖層→透明度→新增透明色版) 或者將它平面化 (圖片→圖片平面化)。
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:7
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8.
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You can adjust or move a selection by using <tt>Alt</tt>-drag. If this makes the window move, your window manager uses the <tt>Alt</tt> key already. Most window managers can be configured to ignore the <tt>Alt</tt> key or to use the <tt>Super</tt> key (or "Windows logo") instead.
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按 <tt>Alt</tt> 鍵再用滑鼠拖曳可以調整和重新放置選擇區域。如果這個組合令視窗移動，即表示視窗管理程式已經使用了 <tt>Alt</tt> 鍵。大部分視窗管理程式可以設定為忽略 <tt>Alt</tt> 鍵，或是使用 <tt>Super</tt> 鍵 (或「Windows logo」) 來代替。
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:8
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9.
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You can drag and drop many things in GIMP. For example, dragging a color from the toolbox or from a color palette and dropping it into an image will fill the current selection with that color.
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GIMP 裡面很多東西都是可以拖曳的。舉個例子，從工具箱或色盤裡拖曳一種顏色出來並放到圖片上，會將目前的圖片或選擇區域填滿該種顏色。
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:9
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10.
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You can use the middle mouse button to pan around the image (or optionally hold <tt>Spacebar</tt> while you move the mouse).
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您可以用中央滑鼠按鈕抓住圖片在視窗內移動（或選擇在移動滑鼠時按住 <tt>Spacebar</tt>）。
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:10
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11.
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Click and drag on a ruler to place a guide on an image. All dragged selections will snap to the guides. You can remove guides by dragging them off the image with the Move tool.
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在尺規上按下滑鼠左鍵並拖曳至圖片內就可以加入參考線。以後任何拖曳的選擇區域都會自動吸引至參考線上。如果要去除參考線，可利用「移動」工具將參考線拖曳到圖片範圍以外。
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:11
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12.
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You can drag a layer from the Layers dialog and drop it onto the toolbox. This will create a new image containing only that layer.
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您可以在「圖層」對話方塊中拖曳一個圖層並將之放進工具箱內。這樣會產生一幅只含有該圖層的圖片。
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:12
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13.
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A floating selection must be anchored to a new layer or to the last active layer before doing other operations on the image. Click on the "New Layer" or the "Anchor Layer" button in the Layers dialog, or use the menus to do the same.
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對圖片進行任何操作前，浮動選擇區域必須先固定在新的圖層或是最後使用的圖層上。要進行以上的程序，可以在「圖層」對話方塊中選取 "新增圖層」" 或 "固定圖層" 按鈕。另外在選單中也可以使用同樣的方法。
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Translated by
Chao-Hsiung Liao
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Located in
../data/tips/gimp-tips.xml.in.h:13
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