v.confine in a fold, like sheep
同义词：fold
Marking system with pen-up/pen-down tracking
HMM-Based Recognition of Online Handwritten Mathematical Symbols Using Segmental K-Means Initialization and a Modified Pen-Up/Down F...
HMM-based recognition of online handwritten mathematical symbols using segmental K-means initialization and a modified pen-up/down f...
Plotter pen up/down control system
Giants''pen up in air
Wacom pen adds a button. (Wacom Technology UltraPen UP-801E pressure-sensitive stylus)(Brief Article)(Product Announcement)
Wouldn't it be nice to ,)pen up the tobacco and
A Simple On-line Handwriting Verification Based on Up-down Signals of a Pen.
Making system with pen-up/pen-down
Shoulder surfing resistance using penup event and neighbouring connectivity manipulation
